Anyone familiar with the William Optics philosophy of high quality at a reasonable price will be glad to know that it extends to binoviewers. Conceived very much as an observing system, the unit comes in a presentation box with two wide-angle 1.25-inch eyepieces of 20mm focal length in addition to a 1.6x Barlow lens. The latter screws into the front of the binoviewer nosepiece, permitting you to use the unit with a wide range of scopes, from Newtonians and refractors to Schmidt- and Maksutov-Cassegrains. We were especially pleased to note that William Optics provides safety undercuts on the nosepiece and the eyepieces. This means that if the screws in your scopeâ€™s focuser or the unitâ€™s eyepiece holders slacken off, your precious investment isnâ€™t going to go crashing to the ground.

[hr]
In the May issueâ€™s Group Test, the contact telephone number printed for the William Optics binoviewer was incorrect. It should be [b]Ian King Imaging, on 01892 834 004.[/b] Our apologies to Ian King Imaging and Telescope House for the error.

[hr]
Read the full review and more in this month's Sky at Night magazine.

Have looked at bino viewers in the past as i struggle squinting in one eye and wondered if these would be a solution. Could anyone that has or uses these give any feedback on how they rate them and would they be of any benefit in smaller scopes. As always any comments would be appreciated.

Hi,
once you have used a good binoviewer there is no going back to 1 eye
viewing, it is simply the best, there are 2" binoviewers for the big scopes
(Â£900) and simply the cheap ones for the little ones, i use mine with a 120mm refractor, and i could look at satern all night, you have to use a
barlow to get focus and that takes it to 4x, so my 20mm eye pieces give me 200x and that is great for my set up...briam mac

I have owned one of these for a couple of years and it is brilliant, I use it with my "trusty" Celestron C150HD to view the Moon. Once you have correctly focused and balanced each eyepiece the results are stunning.

The only problem I have is that the focus tube on my scope is too long to allow me to reach focus, not enough in travel, so I have to unscrew the evepiece holder which leaves no locking screw. It also is quite heavy so it is probably not advisable to use it with small scopes.